Shoulder Arthroscopy Clinical Trial
Official title:
Comparison of Shoulder Anterior Capsular Block and Interscalene Brachial Plexus Block for Shoulder Arthroscopy: A Preliminary Analysis
The aim of our study is to reveal a comparison between interscalene brachial plexus block and shoulder anterior capsular block with respect to their efficacy on pain relief during perioperative anesthetic management. As intraoperative hemodynamic stability is an important factor for surgeons to achieve better outcomes because of its effect on the quality of arthroscopic visualization for shoulder arthroplasty, the investigators will also observe the effects of this matter. 50 patients scheduled for elective surgery will be randomized by closed envelope method into two groups (n=20) receiving either interscalene brachial plexus block or shoulder anterior capsular block preoperatively. Each group receives standardized general anesthesia and perioperative pain management protocol. Data to be recorded are numeric rating scales, intraoperative and postoperative analgesic use, intraoperative hemodynamic parameters, and arthroscopic visualization score. Moreover, block performance time, motor block, and side effects or complications will be noted.
Introduction: Pain management after shoulder arthroplasty continues to be challenging. Although interscalene brachial plexus block has been accepted to be the gold standard intervention to relieve pain and improve postoperative outcomes by effecting functional rehabilitation and recovery times, usually results in motor block and complications such as hemi-diaphragmatic paralysis are possible to encounter. For this reason, the research for novel techniques to alleviate these outcomes resumes on the anatomical point of view and ultrasonography guidance. Shoulder anterior capsular block is a recently described interfascial and pericapsular block and is shown to be effective in relieving shoulder pain without motor block or complications. The aim of our study is to reveal a comparison between interscalene brachial plexus block and shoulder anterior capsular block with respect to their efficacy on pain relief during perioperative anesthetic management along with intraoperative hemodynamic stability, and their effect on the quality of arthroscopic visualization for shoulder arthroplasty. Material method: Patients scheduled for arthroscopic rotator cuff repair after June 30, 2022, are eligible for this study after ethical board approval. Inclusion criteria are (1) patients aged between 18-90 years with American Society of Anaesthesiologists (ASA) Physical Status classification I to III, (2) diagnosed with rotator cuff rupture, and (3) admitted receiving arthroscopic cuff repair surgery. Written informed consent will be obtained from all participants. Exclusion criteria are refusal to participate in the study, history of neurologic deficits or neuropathy affecting the brachial plexus; infection at the site of the block application; coagulopathy; pre-existing respiratory dysfunction; allergy to local anesthetics; uncooperative patients who cannot reliably answer to verbal pain evaluation. All patients will receive standard general anesthesia under standard monitorization; induction with 0,03 mg/kg midazolam, 2 mg/kg propofol, 2 mcg/kg fentanyl, 0,6 mg /kg rocuronium followed by 2% MAC sevoflurane in an air-oxygen mixture for maintenance of anesthesia. Randomization is designed with concealed opaque envelope in a 1:1 ratio into 2 block groups (n= 20): interscalene brachial plexus block (Group A) and shoulder anterior capsular block (Group B). All blocks will be performed before surgical incision by a single experienced regional anaesthesiologist (B.Ç.) under ultrasound guidance with the same local anesthetic doses: 0.375 % bupivacaine anesthetic solution of 10 mL and 2 % lidocaine anesthetic solution of 5 mL. The duration of the block procedure will be recorded by the anesthesia technician. Then the investigator will apply dexamethasone 4 mg (IV) after each block and approximately 15 minutes later the patient will be ready for a surgical incision. Intraoperative hemodynamic values (heart rate, systolic, and mean arterial pressure) will be recorded by the same technician. The same analgesia protocol will be applied as an infusion of remifentanil (0.01 to 0.1 μg · kg-1 · min-1) if only needed to maintain the heart rate and mean blood pressure within 20% of pre-induction values and 1 gr paracetamol. At the end of the surgery, the surgeon who is blind to the groups will decide the arthroscopic visualization score. After surgery, all patients will be followed by the same orthopaedist who is blind to the patient groups. Also, the patients themselves cannot know their groups as well. Pain will be evaluated both by a numeric rating scale (0-10) and verbal rating scale starting at the post-anesthesia care unit (PACU) and at time intervals 2-6-12-24-48th hours postoperatively. Patients with persistent pain scores higher than 4 of 10 will receive rescue analgesia with 1mg/kg (maximum daily dose, 4x1) tramadol and 1 gr (maximum daily dose, 4x1) paracetamol. The duration of motor blockade if any, the severity of rebound pain and the total amount of analgesic drug used during the postoperative follow-up of the patient will be recorded. Before discharge, patient satisfaction (1. Not at all satisfied, 2. Dissatisfied 3. Moderate 4. Satisfied 5. Very satisfied) will be evaluated and the presence of postoperative side effects and complications will be questioned. ;
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